Dental foil container



Oct. 13, 1931. l.. w. DUNHAM DENTAL FOIL CONTAINER Filed Jan. 1v, 1930 FIGJ lnx/e n for. au/rence Wun/lam.

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` Patented Oct. 13, 1931 'UNM-DjSTATES IAWRENGE, wl,,n'uNnAivti OF NEW YORK, NJY., AssIGNoR 'ro/THE nENTIsTs SUPPLY -OOMPANYOF NEW'VYORILA CORPORATION OF NEW YORK :DENTAL FOIL CONTAINER '.Appneafiopliuegi'Jafy 17, 1930. serial 10.421,339.

In dental work f invthelaboratory, Ysuch as in tl'iefmakingr otja'cletlcrown's, porcelain inlays and ',bridgefwork', for example,v itv is v i customary to usea platinum or' alloyrnatrix foil which, whenvout and vapplied toarti'cial teeth, tacingsN and inlays, provides a foundation vupon which tofbuild up the gold t0 constitute the real fnietal supporting struci tures for the porcelain; and'y Owing tothe 1o costly nature ot the platinumor other matrix foil. it is desirable that suitable guidingmeans shall be associated with the foil fto enable the same to be out to the size required-without in any wise impairing the smooth ,charace ter and'protection .tot .the foil, 4whereby'the foil remaining` is protected against becomingr contaminated, wrinkledv orf marred by han,`

dii-n0; or bv having instruments inadvertently Broadlv consideredmy,invention 'compref hends arsheet` of platinumy or other matrix foilprotected within container orcasing in whole or in part of a transparent character, whereby vthe foil is maintainedin a flat condition'fand.,at'the ysame time, shielded orproteeted'against injury. thesaid Container directly provided with, or in`5 association with,

markings yof a suitable character in the form ol lines andperforat'ionseither or both, which will permit the 'dentist orlaboratory worker to arnnfoximate',and cutfromf the said toil portions thereotwhich will be capable oit-meetingv thereouiremlents ofthe' f worlr in hand, with a mi nimum'jpossibl'e waste lat the/time oi or after being severedlV I 'QVQ 'i 'Y `VMore specicallv considered. mv invention employs marking` or indicating'means, as a .Qui e in nuttin@ the foil, of snch form and y4o character that thevoil may be directly marked through 'the fcontainer or "out ialong' lines printed. or provided upon the ysurface lot' the container, either or lboth ;,and preferablythe container is made of transparent material whereby the Aextent andshape ofthe foil remaininp; may be readilyT seen', and by're'ason of which the cutting'of a portion ofitherequisite size'may be assured.A

As a further Yspecial enibodimgent in-my '50 ,improved dental foil container, -I formthe same of'atransparent rectangular body at one or both ends and closedalong its length i and within which the platinum or lother ma-v trix foil isplaced with freedom of adjustingy itselfjlongitudinally or transversely ofthe container by gentletapping of thefsameupon itsendsor 'side'edges toshift the foilwithinthe 'casing preliminary tothe cuttingol" of theY requisite piece' of' foil necessary for the `worlf: in'hand. 4 y. As a further distinguishing kfeature"ofthe preferred form Of'my improvemena'l provide the transparent container' in lattened form Open at its ends and closedat its side edgesr an d'provi derbl moreover, withperforations at intervalsalong one of its side edges and'additional perforations through the layV ers constituting' its faces, two or Vmore of said perforations positioned in direct alinement with or without line markings indicating' 'such alinement. 1 ,l 1

f My invention VVfurther consistsof features of construction which rare fully described hereinafter and moreparticularly pointed out inthe claims.

- ,Referring to the drawings: FigQl is a side view', Ot', my improvedv dental foil lcontainer adapted vto receiveth'e matrix foilrFig. 2 is a plan view ofthe matrix foil; Fig. 3 is a sidefviw ofthe container with the foilfin place; and Eig', Llis across section of lthe same.; taken on line 4.444. y

AThe container or casing` is, preferably PAAT-ENT OFFICE, ,l y l formed, in whole or in part, of a transparent material, such yas Celluloid Aorother substance having similar physical characteristics, andv maybevmade'likean elongated envelope with` Outclosed ends. -As shown, it is formed of a sheet folded along its lengthat to providea `front wall 2 anda back wall' 3. The front wall 2, may furthermore,.have. alongitudinal flap 5 foldedoverthe edge VOi thev backwall 3. and pressed down upon'it, prete erably'with yielding; pressure. Ther two walls 2 "and 3 arepressedvv close to each other. as 'shown lin Fig..4, and when formed ofcellufloid'or'its equivalent, which'is pliable under lieatfand sets upon becoming cold, the walls retainitheiry parallel arrangement, and functonally may be likened to a short length of celluloid tube flattened for its entire length and physically open at its ends. Other features of this container or casing Will be specified hereinafter.

In Fig. 2, is shown a thin sheet of platinum alloy or other matrix foil 1l, such as employed `in the dental arts, more especially useful for making porcelain jacket crowns. This matrix foil ll is desirably elongated in shape with substantially paraiiel side edges and of av Width somewhat smaliler than the Width of the container or casing above described. This matrix foil sheet l1 is introduced into the container through the end thereof; and When introduced, it is 'thoroughly protected but may be shifted Within the container by tapping the latter `upon .the table or .fixed surface. FoareXample, the matrix foil is shown in 3, as adjusted .to t-he longitudinal edge and to-oneend ofthe container -or casing. To enable the matrix foil il to -be Withdrawn from the container, the latter may have its 4end note-hed as yat 6 whereby the end of the .matrixfoil `may be grasped and Withdrawn to the extent desired.

Assuming that the .-matrii foil sheet is in position Within the container -as shown i-n f3, there Will appear above or in front of the foil a marking, preferably in the form of longitudinal lines, transverse lines and ldiagonal Tlines. These may comprise longitudinal line 10a along the edge 4 of the container; a longitudinal li-ne 10 parallel to -li-ne 10a and positioned over one of the edges vof the foil; transverse parallel. lines 14 and parallel to the ends of the container `and at right angl-es to the longitudinal lines 10 and 10a; and oppositely arranged diagonal lines l2 and 13.. vso that the space Within the lines 10, 10a., le and 15 maybe divided tinto triangular .and `diamond shapes; and the latter in ay, further., be 'divided into triangles by the addition Vfof a further line 16 parallel to the lines in() and 10a and centrally located at the junctions 4of the crossing; oblique lines. /Vhile I .do not restrict myself to the .above described markings, they will, however, suftice to provide lines along the container and over the foil whereby .the foil and container may be cut, with reasonable .accuracy,'te the size and form desired.

Aside from the line .mar-kings above `described, the the junctures of .the sev-- eral lines mav'be perforated with small apertures. as indicated .at 7., 8, 9, vand 7a; and in thefcase of the pertures they open laterally into the edge 4,- ofthe container.. These apertures are very st nall and their purpose is to provide a means for marking .the foil whereby there may be provided upon fit, when Withdraw-n, partly or Wholly, from .the .container, separate punctures or indentations which Will act as a guide to the dentist .in cutting the foil to the requisite size and shapes, sai-d perforations or ind'entations venabling the cutting of the foil in a manner corresponding to the markings or lines upon the container. In this procedure, the marked foil may be returned to the casing When the desired portion thereof has been severed by means -of shears. It Will talso be understood that .in utilizing the foil inA the manner just described, the apertures or markings upon the foil itself need not extend beyond that portion of `the vfoil which the dent-ist knows for :ar certainty he Will not have reason to severV from the main body of the foil.

It will now be seen that the foil is always in full vien7 Within the transparent container d and, at the same time, it is thoroughly protected against contamination, soiling or injury; and moreover, While yit ishe'ld ina iiat conditionit is capable of being readily shifted ivi-thin the `container to enable it to be positioned beneath the markings upon the container. whereby lthey act as a guide in cutting, marking or otherwise .handling the foil during `its commercial use.

By reference to Fig. 4l, it will be seen that the closed folded edge 4 provides a Wider space between the side Wallis than occurs along the Ymiddle of container where the side Walls 2 .and tend to move in direct contact and puta `slight pressure upon the foil 11. The enlarged space le adjacent -to the closed edge 4 is greater 'than the thickness of the foi-l, and consequently the edge of the foil does not fbind When adjusted down to this closed edge. Moreover. this :clearance between the-edge of the foil and the closed `edge 4 of the `container permits the adjustment of the foil by relatively light tapping of the container, While, at the same time, the spring action ofthe side Walls upon the foil places sufficient vclamping action between the container and foil to yieldingly retain the latter ina-ny position of .adjustment Within the container. `By reference to Fig. 4, it will also be seen that .the upper edge 4of the side Wall?) is pressed toward the side 'Wall 2 and upon the foil ll by the spring 4action of the folded flap 5, and thereby assists in putting a gentle pressure `upon the foil to prevent 'too free shi tti-ng thereof.

`It Will now be apparent that I have devised a novel and useful construction which embodies the features of advantage enumerated as desirable, and While I have in the present instance shown and described. the preferred embodimentthereof which has been found in practice to give satisfactory and reliable results, it is to be understood that I do not restrict myself vto the details as the same are susceptible of .modification in various particulars, Without departing from the spiritor scope ofthe invention.

I claim:

1. A combined foil and container consisting of a flattened envelope having an open end and a transparent face having markings thereon as a guide for cutting the container and its foil contents, wherein said markings are extended to one closed edge of the container and also parallel to and adjacent yto the open end of thecontainer. 4 f y t 2. rIhe invention according `to claim 1, wherein further, .the container is provided with apertures in delinite spaced positions along the markings of the container to prem sent engaging places onthe container for the scissors or other cutting instrument. f

3. The invention according to claim 1, wherein further, the markings on the transparent face ofthe containerare formed by perforations, and in which a plurality of perforations arc positioned 1n straightalinement and the foil is arranged transverselyl across the perforations so as' to be in alignp ment with said perforations and therebyinl position to be cut. i n

4. A foil container consist-ing'of a flattened i envelope having an open end and a transparent face having markings thereonas a vguide for cutting the container, wherein further,

y the container is' combined with a llat rectanguiar foil sheet of less surface area than the interior space of the container, whereby it may be shifted lengthwise and transversely within the container by impact and gravity, and of less thickness than the width of the interior space of the container adjacent to the closed edges of the container.v

5. A rectangular container formed ot a sheet of transparent material folded uponitself to provide flat parallel walls and closed longitudinal edges and openl at oneend, said closed edges providing more clearance transversely than the distance between the parallel side walls of the container, combined withv a fiat rectangular foil sheetof less surface area than the interior space of they container, whereby it may be shifted.k lengthwise and transversely within the container by impact and gravity, and of less thickness than the width of the interior space of the container adjacent to the closed edges of the' container.

6. The invention according to claim 1, wherein further, the markings on the transparent face of the container are formed. by perforations connected by lines, the said lines being arranged at an angle to each other to form triangular markings, and aportion of the perforations also being `arranged along one of the closed edges of the container and forming notches therein at intervals apart to present places on the container for engage-k nient of the scissors or other cutting instrument. i

In testimony of which invention, I, here- 60 unto set my hand.

LAWRENCE W.-DUNHAM.v 

